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05-05-2015, 05:22 PM
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#1
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Member
Join Date: Jul 2014
Posts: 52
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12 Volt System Not functioning
I need a little help. My inverter monitor panel reports 12.1 volts so I am pretty good with battery level. I have checked all of the 12v fuses in the panel and all appear to be good. Checked battery disconnect and it is on. With all of this I have no 12v lights, vent fans, etc. Have I missed something, is there something else I need to check or reset? t get my 12 volt system back? 
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Bob and Kathy
2014 Redwood 38RE
2013 GMC 3500HD Denali 4x4 Dually
6.6 Liter Duramax Diesel w/ 6 Speed Allison Trans
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05-05-2015, 07:27 PM
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#2
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Senior Member
Join Date: May 2013
Posts: 500
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12.1 volts is a dead battery.
Mark
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2013 36RE, 2008 GMC 3500CC DRW
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05-05-2015, 07:30 PM
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#3
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Senior Member
Join Date: Jul 2013
Posts: 721
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Should be between 12.7 and 12.9 volts or so, and jump up to over 13 when the coach is plugged into shore power.
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Jim & Mary 2013 36 RL with Titan Disc Brakes Residential Fridge Goodyear 17.5 H rated tires MORryde IS, MORryde pin box 2015 Ford F350 King Ranch DRW
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05-06-2015, 01:19 AM
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#4
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Senior Member
Join Date: Feb 2013
Posts: 1,444
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Quote:
Originally Posted by markw
12.1 volts is a dead battery.
Mark
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Yes, I agree, 12.1 is a dead battery!
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 Rick and Mindy
Retired
2013 Redwood 31SL, 2011 Ford F350 SRW, 6.7, Crew Cab with Firestone Bags, Titan Disc Brakes
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05-06-2015, 06:15 AM
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#5
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Member
Join Date: Jul 2014
Posts: 52
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Ok. Thanks for the information. I will recharge the batteries again and see what happens.
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Bob and Kathy
2014 Redwood 38RE
2013 GMC 3500HD Denali 4x4 Dually
6.6 Liter Duramax Diesel w/ 6 Speed Allison Trans
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05-07-2015, 04:53 PM
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#6
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Member
Join Date: Jul 2014
Posts: 52
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Quote:
Originally Posted by Rick and Mindy
Yes, I agree, 12.1 is a dead battery!
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Batteries have been charged. Still no 12v DC to coach. Anyone with any ideas. Tried talking with Redwood customer service and they basically left me on my own.
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05-07-2015, 06:11 PM
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#7
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Senior Member
Join Date: Jul 2013
Posts: 721
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Does anything function in the coach while plugged into shore power? If that's not practical, how about plugged into the tow vehicle while the engine is running? How sure are you of the health of your batteries and connections? I understand you have no 12 volt anything that works, correct? Slides, refrigerator, range hood, docking lights?
Jim
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Jim & Mary 2013 36 RL with Titan Disc Brakes Residential Fridge Goodyear 17.5 H rated tires MORryde IS, MORryde pin box 2015 Ford F350 King Ranch DRW
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05-07-2015, 08:52 PM
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#8
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Senior Member
Join Date: Feb 2013
Posts: 1,444
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You say you have an inverter, not a converter? If you do not have a residential refrigerator than you probably have a converter. I would suspect the converter if you are getting nothing from shore power. The converter runs on shore power check all circuit breakers. Have you tried, as suggested, the hydraulic system or slides?
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Rick and Mindy
Retired
2013 Redwood 31SL, 2011 Ford F350 SRW, 6.7, Crew Cab with Firestone Bags, Titan Disc Brakes
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05-08-2015, 12:09 AM
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#9
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Site Team
Join Date: Jan 2012
Posts: 5,407
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I would start at the batteries themselves and work back. Be sure to look at the ground. Without a good ground, the 12 volt system is dead. While checking the ground look at the connection at the "Buz Bar". Also check the fuses on the inverter itself. You can get to them by dropping down your service wall (at least on the 36RL) they're on the side of the inverter. I would guess your issue will be found very close to the batteries
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SOB "The RV Wiseguy"
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05-08-2015, 01:36 AM
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#10
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Senior Member
Join Date: Nov 2014
Posts: 2,032
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Being a 2014 if you have an invertor which runs the residential fridge. You will still have a convertor which should be in a closet by the door which converts the shore power to 12 volt. Check all of the fuses in this unit. You either have the main fuse feeding it bad or there is a possibility which I have had before that your convertor is toast. If you have or someone you know can check the voltage with a meter you can see if you have 120 volts coming in and no 12 volt going out
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2015 36RL pushing a 2015 Denali
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